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Only this processors are compatible with your chipset GL40 :
Intel® Celeron® Processor 575 (1M Cache, 2.00 GHz, 667 MHz FSB)
Intel® Celeron® Processor 585 (1M Cache, 2.16 GHz, 667 MHz FSB)
Intel® Celeron® Processor T1700 (1M Cache, 1.83 GHz, 667 MHz FSB)
Intel® Celeron®...